Here are located the Parliament buildings, site of Canada's government. Walk around the site. Great views of the buildings, its gardens, the Chateau Laurier and the Ottawa locks.
Beautiful gothic architecture, history and many statues and monuments dedicated to Canada and its history.
The Centennial Flame was finished in 1967, Canada's 100th birthday. The eternal flame symbolizes Canada's unity.
The West Block, like the other Parliament Buildings, is an impressive heritage building. Officially opened in 1866, it contained the Postmaster General, Public Works and Crown Lands departments.
Well, for most you can see in Ottawa is just Parliament Hill and its nearby buildings.